The Iowan Glaciation and the So-Called Iowan Loess Deposits

One cannot work in the Iowan Drift area and in adjacent areas of older drift without confronting the problem of the loess. During the field seasons of 1914 and 1915 while associated with Dr. Wm. C. Alden of the U. S. Geological Survey in reviewing the field evidences for and against an Iowan stage of glaciation, the writer became interested in certain phases of the loess and their interpretations. Through the kindness of his senior colleague, the writer has the privilege of briefly discussing these phases before the Iowa Academy of Science. A more complete discussion will appear in the forthcoming report of the Iowa Geological Survey in connection with the report on the investigations of the Iowan Drift, under the joint authorship of Doctor Alden and the writer